氢气进气压力对空冷PEMFC性能的影响  

Effects of hydrogen intake pressure on performance of air-cooled PEMFC

作　　者：张丽 石文荣 梁琦 刘阳 夏中峰 郭振 ZHANG Li;SHI Wenrong;LIANG Qi;LIU Yang;XIA Zhongfeng;GUO Zhen(Qingdao Institute of Bioenergy and Bioprocess Technology(QIBEBT),Chinese Academy of Sciences(CAS),Qingdao 266101,Shandong,China;Shandong Energy Institute,Qingdao 266101,Shandong,China;Qingdao New Energy Shandong Laboratory,Qingdao 266101,Shandong,China)

机构地区：[1]中国科学院青岛生物能源与过程研究所,山东青岛266101 [2]山东能源研究院,山东青岛266101 [3]青岛新能源山东省实验室,山东青岛266101

出　　处：《化工学报》2023年第11期4730-4738,共9页CIESC Journal

摘　　要：空冷型质子交换膜燃料电池(PEMFC)具有自增湿、质量轻、系统操作简单等特点,适合应用于无人机等领域。氢气进气压力是影响空冷型PEMFC电堆性能的一个重要因素。以1 kW阴极开放式空冷型PEMFC电堆为研究对象,对比了不同氢气进气压力对单片电池电压及其一致性、电堆输出电压、输出功率以及氢气利用率的影响。研究结果表明,氢气进气压力越高,单片电池电压、电堆输出电压和功率越高,大电流下单片电池电压的一致性越好;此外,本实验利用排水法收集阳极尾气并计算氢气利用率,氢气进气压力越高,系统氢气利用率越低。The air-cooled proton exchange membrane fuel cell(PEMFC)has the characteristics of selfhumidification,light mass,and simple system operation,and is suitable for use in fields such as drones.Hydrogen intake pressure plays an important role in the performance of the air-cooled PEMFC stack.Based on 1 kW aircooled PEMFC stack,the influence of different hydrogen inlet pressures on the performances of the single cell voltage and distribution,output voltage and power of stack,and hydrogen utilization efficiency were considered.The experimental results indicate that the values of the single cell voltage,output voltage and power of stack are an upward trend with improving inlet gas pressure.Besides,the single cell voltage is in good agreement under high current.Moreover,increasing the inlet pressure decreased the hydrogen utilization while the experiment uses drainage method to collect exhaust gas and calculate hydrogen utilization rate.

关 键 词：空冷电堆 进气压力 电池性能 氢气利用率 

分 类 号：TQ028.8[化学工程]